Closing the Circuit (IMAGE) Vanderbilt University Caption Vanderbilt researcher Ken Catania wanted to solve an equation that included resistances in the eel, the water and his arm. Credit Ken Catania/Vanderbilt University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.